Table 2 Data items to be extracted from each included study

Study characteristics

Year of publication

Sample (n, age)

Country

Study design

Study population

Caregiver relationship to care recipient (e.g., spouse, child, friend)

Caregiver characteristics (e.g., paid or unpaid, cultural background)

Dementia diagnosis (e.g., type, severity, onset)

Living arrangement (e.g., alone, with spouse or other, urban or rural setting)

Intervention characteristics

Duration

Mode of delivery (e.g., face to face, online, group, individual)

Content (e.g., psychoeducation, decision trees)

Location and setting (e.g., GP clinic, hospital)

Hospital outcome measures

Hospital admissions/presentations (e.g., number, type, length of hospital stay, reasons based on primary and secondary discharge diagnoses, including whether they met the definition of ACSC according to [13])

Adverse incidents (e.g., type, frequency)

Carer outcome measures

Carer burden/stress/wellbeing/quality of life (e.g., Zarit Burden Interview, Depression Anxiety and Stress Scale, Hospital Anxiety and Depression Scale, Health Status Questionnaire)